Origin of quartz
Examples from the Web for quartz
Contemporary Examples of quartz
They measured the amount of different isotopes of xenon trapped in quartz crystals.The Moon’s Been Lying About Its Age
Matthew R. Francis
June 15, 2014
In 2008, NASA discovered crystals with a similar make-up to quartz surrounding young stars.Space Bling: From Diamond Planets to Crystal Oceans to Precious Moon Jewels
Alexa Valiente, Jaewon Kang
October 13, 2012
Composite fillings are typically made of glass or quartz mixed with resins and adhesives.Can Children's Dental Fillings Spur Depression?
July 16, 2012
Quartz orange juice and rice with chicken and French fries for lunch and same for dinner.From Terror Suspect to College Graduate
May 19, 2012
Historical Examples of quartz
Only the first is distinguished by the segregation of the quartz.
The minerals at contact are quartz, biotite, magnetite and hornblende.
Pyroxene, quartz and augite form the groundmass, as seen in section.
Sometimes the quartz is so soft that it may easily be loosened with the pick.
The mule is started, and in four or five hours the quartz is pulverized.
Word Origin for quartz
"silicon dioxide," 1756, from German Quarz, Zwarc "rock crystal," from Middle High German twarc, probably from a West Slavic source, cf. Czech tvrdy, Polish twardy "quartz," noun uses of an adjective meaning "hard," from Old Church Slavonic tvrudu "hard," from Proto-Slavic *tvrd-, from PIE *(s)twer- "to grasp, hold; hard."